Respostas

2014-04-04T10:48:04-03:00
B) (x+3)(x-5)=7
x²-5x+3x-15=7
x² - 2x - 22 = 0
1 5 1
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2014-04-04T11:09:11-03:00
(x+3)(X-5)=7
 x^2 -5x +3x-15 =7
x^2 -2x -22 =0
2 5 2